Dashi, a type of stock made from fish and seaweed, is a key ingredient in many Japanese dishes and is often used to add flavor and umami.

Tokyo is the capital of Japan and the largest city in the world by population, with over 37 million people in the greater Tokyo area.

The Showa period, which lasted from 1926 to 1989, was marked by Japan's militarism and involvement in World War II.